Source : Webster's Revised Unabridged Dictionary (1913)

Transform \Trans*form"\, v. t. [imp. & p. p. {Transformed}; p.
   pr. & vb. n. {Transforming}.] [L. transformare,
   transformatum; trans across, over + formare to from: cf. F.
   transformer. See {Form}, v. t.]
   1. To change the form of; to change in shape or appearance;
      to metamorphose; as, a caterpillar is ultimately
      transformed into a butterfly.

            Love may transform me to an oyster.   --Shak.

   2. To change into another substance; to transmute; as, the
      alchemists sought to transform lead into gold.

   3. To change in nature, disposition, heart, character, or the
      like; to convert.

            Be ye transformed by the renewing of your mind.
                                                  --Rom. xii. 2.

   4. (Math.) To change, as an algebraic expression or
      geometrical figure, into another from without altering its
      value.

Transform \Trans*form"\, v. i.
   To be changed in form; to be metamorphosed. [R.]

         His hair transforms to down.             --Addison.

Source : WordNet®

transform
     v 1: subject to a mathematical transformation
     2: change or alter in form, appearance, or nature; "This
        experience transformed her completely"; "She transformed
        the clay into a beautiful sculpture"; "transubstantiate
        one element into another" [syn: {transmute}, {transubstantiate}]
     3: change in outward structure or looks; "He transformed into a
        monster"; "The salesman metamorphosed into an ugly beetle"
        [syn: {transmute}, {metamorphose}]
     4: change from one form or medium into another; "Braque
        translated collage into oil" [syn: {translate}]
     5: convert (one form of energy) to another; "transform energy
        to light"
     6: change (a bacterial cell) into a genetically distinct cell
        by the introduction of DNA from another cell of the same
        or closely related species
     7: increase or decrease (an alternating current or voltage)